Understanding why we live in a matter-dominated universe demands that scientists recreate the quark-gluon plasma that existed one millionth of a second after the Big Bang. This is only the third hypernuclei ever discovered, and it could help scientists better understand things like the matter-antimatter asymmetry and the strange physics of neutron stars. In late 2024, ALICE—which, as its name suggests, focuses on heavy-ion physics—discovered the heaviest antimatter particle to date at LHC—antihyperhelium-4. By understanding how they interact with neutrons and protons, astrophysicists can also gain a better grasp of the intensely strange physics believed to occur inside the heart of neutron stars. And the finding these hypernuclei particles adds a new piece to that cosmic puzzle.